export enum ParticleSystemRenderMode
{
    /**
     * Render particles as billboards facing the active camera. (Default)
     */
    Billboard = 0,

    /**
     * Stretch particles in the direction of motion.
     */
    Stretch = 1,

    /**
     * Render particles as billboards always facing up along the y-Axis.
     */
    HorizontalBillboard = 2,

    /**
     * Render particles as billboards always facing the player, but not pitching along the x-Axis.

     */
    VerticalBillboard = 3,

    /**
     * Render particles as meshes.
     */
    Mesh = 4,

    /**
     * Do not render particles.
     */
    None = 5,
}
